v3.26.3
ACCUMULATED OTHER COMPREHENSIVE INCOME - Changes in AOCI (loss) related to shareholders' equity (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance, beginning of period $ 5,818 $ 6,006 $ 6,323 $ 6,867
Balance, end of period 5,966 5,707 5,966 5,707
Foreign Currency Translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance, beginning of period (27) 33 17 (70)
Other comprehensive income (loss) before reclassifications (5) (42) (56) 67
Income tax 1 6 8 0
Other comprehensive income (loss) before reclassifications, net of tax (4) (36) (48) 67
Balance, end of period (31) (3) (31) (3)
Derivative Instruments        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance, beginning of period (80) 3 (15) (53)
Other comprehensive income (loss) before reclassifications (112) (41) (215) (33)
Income tax 27 10 52 8
Other comprehensive income (loss) before reclassifications, net of tax (85) (31) (163) (25)
Income tax expense (benefit) (7) (4) (11) (20)
Net losses (gains) reclassified from AOCI to net income 27 12 40 62
Balance, end of period (138) (16) (138) (16)
Derivative Instruments | Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
(Gains) losses reclassified from AOCI to net income 4 10 (6) 52
Derivative Instruments | Location, Statement of Income, Balance [Axis]: us-gaap:Revenues        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
(Gains) losses reclassified from AOCI to net income 30 6 57 30
Pension and OPEB        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance, beginning of period 1,443 1,608 1,490 1,660
(Gains) losses reclassified from AOCI to net income (31) (34) (93) (103)
Income tax expense (benefit) 8 8 23 25
Net losses (gains) reclassified from AOCI to net income (23) (26) (70) (78)
Balance, end of period 1,420 1,582 1,420 1,582
Total AOCI Ending Balance        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance, beginning of period 1,336 1,644 1,492 1,537
Balance, end of period $ 1,251 $ 1,563 $ 1,251 $ 1,563